The new president of the Board of Deputies of British Jews has demanded the expulsion of Ken Livingstone and Jackie Walker from the Labour party by the end of July.

In her first broadcast interview since being elected to the role on Sunday, Marie van der Zyl pledged that under her leadership the Board of Deputies would continue to press Jeremy Corbyn to take more action against antisemitism in the party.

Speaking to BBC Radio 4’s Today programme, Van der Zyl said she expected Labour to throw out Livingstone, the former London mayor who is suspended from the party after comments he made about Adolf Hitler’s support for Zionism; and Walker, a former vice-chair of Momentum who is suspended over critical comments she made about Holocaust memorial day.

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Van der Zyl said: “Enough is enough and we now need to see actions and not words … which include a swift action in relation to the outstanding disciplinary cases … There’s Ken Livingstone and there’s also the case of Jackie Walker. We are expecting and hoping that that will be resolved by the end of July.”

She said the Board of Deputies would continue to protest and demand inquiries and debates in parliament if no further action was taken.

Her frontbench colleagues Emily Thornberry and Nia Griffith have made similar calls. But Corbyn has said the party’s disciplinary process must be allowed to take its course without interference.

In speeches before her election, Van der Zyl was highly critical of Corbyn. She was quoted as saying that he was “infested by his bigotry” and that the Labour party did not belong to him.

However, in her interview she was more conciliatory. “We want to see Jeremy Corbyn lead the Labour party and carry out his pledge to root out antisemitism and all forms of racism within the party,” she said.

“We are not saying don’t vote Labour, but as we’ll be seeing from the results, especially in Barnet [in local elections earlier this month], the voters have spoken.

“What the Board of Deputies wants is to see Jeremy Corbyn and the Labour party be accountable and to root out antisemitism and all forms of racism – that’s what we want.”